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Home Archive of journals 1 (2), March 2018 HLW Disposal of in Vertical Deposition Holes with Cement Backfill Pro and Contra with Regard to Long Term Safety of Geological Disposal Facility

HLW DISPOSAL OF IN VERTICAL DEPOSITION HOLES WITH CEMENT BACKFILL PRO AND CONTRA WITH REGARD TO LONG TERM SAFETY OF GEOLOGICAL DISPOSAL FACILITY

JOURNAL: 2018, 2, p. 21-33

AUTHOR: S.A. Bogatov

ANNOTATION:

Usage of cement based material as an engineering barrier for HLW is considered. This option has a verity of advantages
concerning: effective chemical barrier creation; iron containers corrosion reduction; high gas permeability; the same
types of engineering barriers for HLW and ILW in repository; easy handling of cement. The main challenge in cement
application is accelerated corrosion rate of vitrified waste matrix and relatively high permeability for low absorbing
nuclides like 129I and 36Cl. However, advantages of cement barrier may override its shortcomings concerning
Nigenekansky geological disposal facility where compact HLW emplacement is envisaged within deposition holes of
75 m depth with bentonite barrier and 129I and 36Cl content is insignificant.

Keywords: radioactive waste, geological disposal of, engineering barrier, cement based materials.


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Bogatov S. A. HLW Disposal of in Verticale Deposition Holes with Cement Backfill — Pro and Contra with
Regard to Long Term Safety of Geological Disposal Facility. Radioactive Waste, 2018, no 1 (2), pp. 21—33. (In Russian).


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